Wagon-brake.



No. 864,073. PATENTED AUG. 20, 1907.

- J. B. BUBB.

WAGON BRAKE. APPLIoAIoN FILED SEPT. 17. 190e.

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WAGON BRAKE. APPLICATION FILED 15212117.1906.

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Rs co.. wAsHlNcTaN u PATENTED AUG. 20, 1907.

JOHN B. BUBB, OF HOMER, NEBRASKA.

Specification of Letters Patent.

WAGON-BRAKE Patented Aug. 20, 1907.

Application filed September 17, 1906. Serial No. 334,843.

To all whom it may concern:

Be it known that I, JOHN B. BUBB, a citizen of the United States,residing at Homer, in the county of Dakota and State of Nebraska, haveinvented new and useful Improvements in Wagon-Brakes, of which thefollowing is a specification.

This invention relates to wagon brakes and one of the principal objectsof the same is to provide reliable and eflicient means for braking therear wheels of a vehicle Whenever the horses attempt to back up.

Another object of the invention is to provide a vehicle brake which isset into operation when the animals back up or in going down a hill, theforward movement of the wheels being permitted with a slight frictionagainst the brake shoe.

The foregoing objects and others are attained by means of theconstruction illustrated in the accompanying drawings, in which:

Figure 1 is an underside plan view of the running gear of a vehicle, andshowing my automatic brake connected thereto. Fig. 2 is a view inelevation of the rear wheels ofthe vehicle and showing the reach insection. Fig. 3 is a detail longitudinal section through the rear axleand showing one of the springs for throwing the brake shoe away from therear wheels.

Referring to the drawings for a more particular description of myinvention, the numeral 1 designates the front axle and 2, the rear axleof a wagon or other wheeled vehicle. The front wheels 3 are journaled tothe axle 1 and the rear wheels 4 are mounted to rotate on the axle 2. Areach 5 is pivotally connected to the front axle and the hounds 6 aresuitably connected to the front axle 1 with a tongue 7 secured betweenthem in any suitable manner. On the front end ofthe tongue a pin 8 issecured, said pin adapted to receive the neck yoke ring of the team.Extending laterally from the front end of the tongue is a bracket 9 andpivotally connected at 10 to said bracket are oppositely disposed links11, the front ends of which are provided with apertures 12 to which thebreast chain or strap is connected. Pivotally connected to the rear endof the link 11 are oppositely disposed connecting rods 13 and the rearends of said rods are engaged with a ring 14 on the frontend of a bar15, the end of which is pivoted to a rod 16 which extends back and isconnected to a metal strap 17 mounted to slide upon the reach 5 andprovided with a link 18 at its rear end. Connected to the link 18 areconnecting bars 19 pivoted to levers 20, said levers 2O being pivoted at21 to a platform 22 secured to the rear axle 2. Links 23 are pivoted atthe outer ends of the levers 2() and the opposite ends of the links 23are pivoted to a bracket 24 secured to the rear side of a cross bar 25.Mounted to rotate in keepers 26 .secured to the cross bar 25 is a doublecrank shaft 27 to the outwardly projecting ends of which are pivoted thebrake shoes 28. The cross bar 25 is mounted to slide in guide straps 29secured at their ends to the platform 22. Springs 30, Fig. 3, surroundrearwardly projecting rods 31 connected to the cross bar 25, saidsprings serving to push the cross bar 25 forward to disengage the brakeshoes 28 from the rear wheels 4. Connected to the Crank shaft 27 is abracket 32 provided with a slot 33 through which projects a pin 34hinged at 35 to the cross bar 25. A spring 36 surrounds the pin 34 andbears at its ends against the bracket 32 and against a lug 37 on thecross bar 25. Stop pins 38 secured at the opposite ends underneath thecross bar 25, serve to prevent the crank shaft 27 from downward movementbeyond an operative position.

The operation of my invention may be described as follows: In going downa hill, or, when the animals back up, the links 11 are moved upon thepivots 10 to draw forward upon the rods 13, 15 and 16, and pull forwardupon the inner ends of the levers 20, thus pulling backward the crossbar 25 and applying thebrake shoes 28 against the rear wheels 4, aslight movement of the wheels' 4 being permitted by means of the spring3G and the bracket 32.

From the foregoing it will be obvious that an automatic brake made inaccordance with my invention, will be applied to the rear wheels of avehicle in going down a hill or whenever the animal attempts to back up.The entire brake is located underneath the reach and under aplatformprojecting forward from the rear axle and is fully protected fromaccidental breakage.

Having thus described the invention, what I claim is:

1. An automatic vehicle brake comprising a cross bar mounted to slide inguides, a double crank shaft journaled in keepers on said cross bar andcarrying brake shoes at its outer ends, springs for moving the cross barforward to disengage the brake shoes on the wheels and means connectedto the cross bar and leading forward to the harness for applying thebrake shoes when the animals move backward or when going down a hill,substantially as described.

2. In a vehicle brake, the combination of a crank shaft, brake shoes onsaid shaft, stops to limit the location of said crank shaft, means formoving said crank shaft to apply the brakes and a spring to permit thecrank shaft to move away from the stops when the wheels are rotated inthe forward direction, substantially as described.

3. A vehicle brake comprising a sliding cross bar, guides for said crossbar, springs in the guides for moving said cross bar toward the front, adouble crank shaft journaled in said cross bar, stops on said cross barto limit the rotation of said crank shaft and connections between saidcross bar and the animals for moving said cross bar and crank shaft toapply the brake shoes, substantially as described.

In testimony whereof, I ax my signature in presence of two witnesses.

JOHN B. BUBB.

Witnesses:

GRACE WILBUR, R. E. EVANS.

